Tracey, A. (1975) “HUMBI EN HANDA — ANGOLA. Recording and commentary by Gerhard Kubik. One 12” 33⅓ rpm disc, 1973. Belgisches Radio en Televisie 6803 044 (No. 9 of a series issued by the Koninklijk Museum voor Midden-Afrika, Tervuren). Notes in German and Flemish, with summaries in French and English, 80 pp., music, photos”, African Music: Journal of the International Library of African Music, 5(4), p. 153. doi: https://doi.org/10.21504/amj.v5i4.1626.